Photoshop: Oil Paint not working (Mac 10.8.5, PS 13.0.6)

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Oil Paint does not work. I fixed the preferences folder, such as advising you on facebook. I have the latest update CS6 13.0.6. Could I please get help at this time, please??? Oh, and the operating system is OS X 10.8.5 and the GPU is also okay ... so help please. The issue can be a little deeper because I've been using Photoshop for over 15 years.